/*
 * Copyright (C) 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dianrui.qiyouriding.view.zxing.activity;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Rect;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.dianrui.qiyouriding.Constant;
import com.dianrui.qiyouriding.R;
import com.dianrui.qiyouriding.activity.CodeCarActivity;
import com.dianrui.qiyouriding.activity.ScanInfoActivity;
import com.dianrui.qiyouriding.okhttp.OkHttpRequest;
import com.dianrui.qiyouriding.util.SPUtils;
import com.dianrui.qiyouriding.util.StringUtils;
import com.dianrui.qiyouriding.util.ToastUtil;
import com.dianrui.qiyouriding.util.Url;
import com.dianrui.qiyouriding.view.zxing.camera.CameraManager;
import com.dianrui.qiyouriding.view.zxing.decode.DecodeThread;
import com.dianrui.qiyouriding.view.zxing.utils.CaptureActivityHandler;
import com.dianrui.qiyouriding.view.zxing.utils.InactivityTimer;
import com.google.gson.JsonObject;
import com.google.zxing.Result;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.net.URLDecoder;
import java.util.List;

/**
 * This activity opens the camera and does the actual scanning on a background
 * thread. It draws a viewfinder to help the user place the barcode correctly,
 * shows feedback as the image processing is happening, and then overlays the
 * results when a scan is successful.
 *
 * @author dswitkin@google.com (Daniel Switkin)
 * @author Sean Owen
 */
public final class CaptureActivity extends Activity implements SurfaceHolder.Callback {

    private static final String TAG = CaptureActivity.class.getSimpleName();
    private CameraManager cameraManager;
    private CaptureActivityHandler handler;
    private InactivityTimer inactivityTimer;

    private SurfaceView scanPreview = null;
    private RelativeLayout scanContainer;
    private RelativeLayout scanCropView;
    private ImageView flashLight, input_img, qr_close, scanLine;
    private TextView flashTxt;
    LinearLayout code;
    Double lat;
    Double lng;
    public SPUtils spUtils;


    private Rect mCropRect = null;

    boolean isOn = false;

    public Handler getHandler() {
        return handler;
    }

    public CameraManager getCameraManager() {
        return cameraManager;
    }

    private boolean isHasSurface = false;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        Window window = getWindow();
        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_capture);
        if (getIntent() != null && getIntent().getExtras() != null) {
            Bundle bundle = getIntent().getExtras();
            if (bundle != null) {
                lat = bundle.getDouble("lat");
                lng = bundle.getDouble("lng");
            }

        }
        spUtils = new SPUtils(this, Constant.cfgFileName, Context.MODE_PRIVATE);
        scanPreview = findViewById(R.id.capture_preview);
        scanContainer = findViewById(R.id.capture_container);
        scanCropView = findViewById(R.id.capture_crop_view);
        scanLine = findViewById(R.id.capture_scan_line);
        flashLight = findViewById(R.id.flash_light);
        flashTxt = findViewById(R.id.flash_txt);
        qr_close = findViewById(R.id.qr_close);
        input_img = findViewById(R.id.input_img);
        code = findViewById(R.id.code_layout);
        inactivityTimer = new InactivityTimer(this);
        TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT,
                1.0f);
        animation.setDuration(3800);
        animation.setRepeatCount(-1);
        animation.setRepeatMode(Animation.RESTART);
        scanLine.startAnimation(animation);
        code.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(CaptureActivity.this, CodeCarActivity.class);
                Bundle bundle=new Bundle();
                bundle.putDouble("lat",lat);
                bundle.putDouble("lng",lng);
                intent.putExtras(bundle);
                startActivity(intent);
                finish();
            }
        });

        flashLight.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (isOn) {
                    turnLightOff(cameraManager.getCamera());
                } else {
                    turnLightOn(cameraManager.getCamera());
                }
                if (isOn) {
                    flashLight.setImageResource(R.mipmap.flash_on);
                } else {
                    flashLight.setImageResource(R.mipmap.flash_off);

                }
            }
        });

        qr_close.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }

    protected void JumpActivitys(Class<?> clazz) {
        Intent intent = new Intent(this, clazz);
        startActivity(intent);
    }

    @Override
    protected void onResume() {
        super.onResume();

        // CameraManager must be initialized here, not in onCreate(). This is
        // necessary because we don't
        // want to open the camera driver and measure the screen size if we're
        // going to show the help on
        // first launch. That led to bugs where the scanning rectangle was the
        // wrong size and partially
        // off screen.
        cameraManager = new CameraManager(getApplication());

        handler = null;

        if (isHasSurface) {
            // The activity was paused but not stopped, so the surface still
            // exists. Therefore
            // surfaceCreated() won't be called, so init the camera here.
            initCamera(scanPreview.getHolder());
        } else {
            // Install the callback and wait for surfaceCreated() to init the
            // camera.
            scanPreview.getHolder().addCallback(this);
        }

        inactivityTimer.onResume();
    }

    @Override
    protected void onPause() {
        if (handler != null) {
            handler.quitSynchronously();
            handler = null;
        }
        inactivityTimer.onPause();
        //beepManager.close();
        cameraManager.closeDriver();
        if (!isHasSurface) {
            scanPreview.getHolder().removeCallback(this);
        }
        super.onPause();
    }

    @Override
    protected void onDestroy() {
        inactivityTimer.shutdown();
        turnLightOff(cameraManager.getCamera());
        super.onDestroy();
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            finish();
        }
        return true;
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        if (holder == null) {
            Log.e(TAG, "*** WARNING *** surfaceCreated() gave us a null surface!");
        }
        if (!isHasSurface) {
            isHasSurface = true;
            initCamera(holder);
        }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        isHasSurface = false;
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    /**
     * <uses-permission android:name="android.permission.READ_LOGS" />
     * <uses-permission android:name="android.permission.FLASHLIGHT" />
     * <uses-feature android:name="android.hardware.camera" />
     *
     * @param mCamera
     */
    public void turnLightOn(Camera mCamera) {
        if (mCamera == null) {
            return;
        }
        Camera.Parameters parameters = mCamera.getParameters();
        if (parameters == null) {
            return;
        }
        List<String> flashModes = parameters.getSupportedFlashModes();
        // Check if camera flash exists
        if (flashModes == null) {
            // Use the screen as a flashlight (next best thing)
            return;
        }
        String flashMode = parameters.getFlashMode();
        if (!Camera.Parameters.FLASH_MODE_TORCH.equals(flashMode)) {
            // Turn on the flash
            if (flashModes.contains(Camera.Parameters.FLASH_MODE_TORCH)) {
                parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                mCamera.setParameters(parameters);
                isOn = true;
            } else {
            }
        }
    }

    /**
     * <uses-permission android:name="android.permission.READ_LOGS" />
     * <uses-permission android:name="android.permission.FLASHLIGHT" />
     * <uses-feature android:name="android.hardware.camera" />
     *
     * @param mCamera
     */
    public void turnLightOff(Camera mCamera) {
        if (mCamera == null) {
            return;
        }
        Camera.Parameters parameters = mCamera.getParameters();
        if (parameters == null) {
            return;
        }
        List<String> flashModes = parameters.getSupportedFlashModes();
        String flashMode = parameters.getFlashMode();
        // Check if camera flash exists
        if (flashModes == null) {
            return;
        }
        if (!Camera.Parameters.FLASH_MODE_OFF.equals(flashMode)) {
            // Turn off the flash
            if (flashModes.contains(Camera.Parameters.FLASH_MODE_OFF)) {
                parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
                mCamera.setParameters(parameters);
                isOn = false;
            } else {
                Log.e(TAG, "FLASH_MODE_OFF not supported");
            }
        }
    }

    /**
     * A valid barcode has been found, so give an indication of success and show
     * the results.
     *
     * @param rawResult The contents of the barcode.
     * @param bundle    The extras
     */
    public void handleDecode(Result rawResult, Bundle bundle) {
            if (!StringUtils.isEmpty(rawResult.getText())) {
                Log.e("扫码结果为:",rawResult.getText());
                try {
                    if (!rawResult.getText().contains("/qy/")) {//不包含/qy(骑行)/
                        ToastUtil.showToast(getString(R.string.code_error));
                        finish();
                    } else if (StringUtils.isEmpty(rawResult.getText())) {//二维码过时了
                        ToastUtil.showToast(getString(R.string.code_error));
                        finish();
                    } else {//否则走接口
                        String[] parameter = URLDecoder.decode(rawResult.getText().split("\\?")[0], "utf-8").split("&");
                        String number = parameter[0].split("/qy/")[1];
                        getInfoPrice(number);
                    }
                } catch (IndexOutOfBoundsException e) {
                    e.printStackTrace();
                    ToastUtil.showToast(getString(R.string.code_error));
                    finish();
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                    ToastUtil.showToast(getString(R.string.code_error));
                    finish();
                }
            }

    }


    private void getInfoPrice(final String devicenumbers) {
        JsonObject detection_json = new JsonObject();
        detection_json.addProperty("number", devicenumbers);//设备编号
        detection_json.addProperty("is_remote", 1);//扫码1扫码，2远程
        if (!StringUtils.isEmpty(spUtils.getString("member_id"))) {
            detection_json.addProperty("member_id", spUtils.getString("member_id"));
        }
        OkHttpRequest.getInstance().postRequests(Url.CHECK_BIKE, detection_json.toString(), new OkHttpRequest.XCallBack() {
            @Override
            public void onResponse(String response) {
                if (!StringUtils.isEmpty(response)) {
                    try {
                        final JSONObject jsonObject = new JSONObject(response);
                        if (null != jsonObject &&!isFinishing()) {
                            if (Constant.DATASUCCESS.equals(jsonObject.optString("status"))) {
                                Intent intent = new Intent(CaptureActivity.this, ScanInfoActivity.class);
                                Bundle bundle=new Bundle();
                                bundle.putString("devicenumber", devicenumbers);
                                bundle.putString("isRomote", "1");
                                bundle.putString("vehicle_status", "1");
                                intent.putExtras(bundle);
                                startActivity(intent);
                                finish();
                            } else {
                                ToastUtil.showToast(jsonObject.optString("message"));
                            }
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            }

            @Override
            public void failedRequest(String result) {
                ToastUtil.showToast(getString(R.string.net_error));
            }
        });
    }

    private void initCamera(SurfaceHolder surfaceHolder) {
        if (surfaceHolder == null) {
            throw new IllegalStateException("No SurfaceHolder provided");
        }
        if (cameraManager.isOpen()) {
            Log.w(TAG, "initCamera() while already open -- late SurfaceView callback?");
            return;
        }
        try {
            cameraManager.openDriver(surfaceHolder);
            // Creating the handler starts the preview, which can also throw a
            // RuntimeException.
            if (handler == null) {
                handler = new CaptureActivityHandler(this, cameraManager, DecodeThread.ALL_MODE);
            }

            initCrop();
        } catch (IOException ioe) {
            Log.w(TAG, ioe);
            displayFrameworkBugMessageAndExit();
        } catch (RuntimeException e) {
            // Barcode Scanner has seen crashes in the wild of this variety:
            // java.?lang.?RuntimeException: Fail to connect to camera service
            Log.w(TAG, "Unexpected error initializing camera", e);
            displayFrameworkBugMessageAndExit();
        }
    }

    private void displayFrameworkBugMessageAndExit() {
        // camera error
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("抱歉");
        builder.setMessage("相机打开出错，请稍后重试");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                finish();
            }

        });
        builder.setOnCancelListener(new DialogInterface.OnCancelListener() {

            @Override
            public void onCancel(DialogInterface dialog) {
                finish();
            }
        });
        builder.show();
    }

    public void restartPreviewAfterDelay(long delayMS) {
        if (handler != null) {
            handler.sendEmptyMessageDelayed(R.id.restart_preview, delayMS);
        }
    }

    public Rect getCropRect() {
        return mCropRect;
    }

    /**
     * 初始化截取的矩形区域
     */
    private void initCrop() {
        int cameraWidth = cameraManager.getCameraResolution().y;
        int cameraHeight = cameraManager.getCameraResolution().x;

        /** 获取布局中扫描框的位置信息 */
        int[] location = new int[2];
        scanCropView.getLocationInWindow(location);

        int cropLeft = location[0];
        int cropTop = location[1] - getStatusBarHeight();

        int cropWidth = scanCropView.getWidth();
        int cropHeight = scanCropView.getHeight();

        /** 获取布局容器的宽高 */
        int containerWidth = scanContainer.getWidth();
        int containerHeight = scanContainer.getHeight();

        /** 计算最终截取的矩形的左上角顶点x坐标 */
        int x = cropLeft * cameraWidth / containerWidth;
        /** 计算最终截取的矩形的左上角顶点y坐标 */
        int y = cropTop * cameraHeight / containerHeight;

        /** 计算最终截取的矩形的宽度 */
        int width = cropWidth * cameraWidth / containerWidth;
        /** 计算最终截取的矩形的高度 */
        int height = cropHeight * cameraHeight / containerHeight;

        /** 生成最终的截取的矩形 */
        mCropRect = new Rect(x, y, width + x, height + y);
    }

    private int getStatusBarHeight() {
        try {
            Class<?> c = Class.forName("com.android.internal.R$dimen");
            Object obj = c.newInstance();
            Field field = c.getField("status_bar_height");
            int x = Integer.parseInt(field.get(obj).toString());
            return getResources().getDimensionPixelSize(x);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0;
    }

}